Centmin Mod + Youtube Resources - recently created to illustrate visually what Centmin Mod can do. Alot of the vidoes are to showcase Centmin Mod .08 betas features which eventually will become the next stable release.

Centmin Mod Insights forum - delve deeper into Centmin Mod code if you want to tweak it or extend it yourself. Find out how PHP Opcode cachers like APC Cache, Zend Opcache and Xcache are configured and installed and how Memcached server is setup etc.

I went one step further beyond just adding pure-ftpd virtual user support, I also enabled and forced TLS SSL only mode by creating a self-signed SSL certificate for pure-ftpd. So there's enforced encryption for more secure FTP connection.

As such you need to set your FTP client to use FTP explicit SSL mode and enable and check Passive connections (PASV) and connect via your server's ip address for hostname and use FTP port 21 (not actually used in PASV mode with FTP TLS/SSL). Filezilla users have a guide and info for FTP Explicit SSL/TLS mode. Centmin Mod updated code already creates the self signed certificate, so only thing in Filezilla to do is set in the SSL/TLS settings menu check allow Explicit SSL/TLS on normal connections and check Disallow plain unencrypted FTP andForce PROT P to encrypt file transfers in SSL/TLS mode.

You also have to disable in your FTP client SSL validation as a self-signed certificate was used.

Note passive ports if needed to be set in FTP client are in range between 3000 to 3050 i.e. for Filezilla.

By default, all incoming traffic from outside a network is blocked and no packet is allowed into an instance without an appropriate firewall rule. To allow incoming network traffic, you need to set up firewall rules to permit these connections. Each firewall rule represents a single rule that determines what traffic is permitted into the network. It is possible to have many rules and to be as general or specific with these rules as you need. For example, you can create a firewall rule that allows all traffic through port 80 to all instances, or you can create a rule that only allows traffic from one specific IP or IP range to one specific instance.

Firewall rules only regulate incoming traffic to an instance. Once a connection has been established with an instance, traffic is permitted in both directions over that connection. To prevent an instance from sending outgoing packets, use another technology such as iptables.

tips and troubleshooting page for details.Blocked traffic
Compute Engine blocks or restricts traffic through all of the following ports/protocols between the Internet and virtual machines, and between two virtual machines when traffic is addressed to their external IP addresses through these ports (this also includes load-balanced addresses).

All outgoing traffic to port 25 (SMTP) is blocked.

Most outgoing traffic to port 465 or 587 (SMTP over SSL) is blocked, except for known Google IP addresses.

Traffic that uses a protocol other than TCP, UDP, and ICMP is blocked, unless explicitly allowed through Protocol Forwarding.

Note: These restrictions do not apply for traffic between two virtual machines through thei

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you might want to try a VPS with a provider that is know to work with Centmin Mod LEMP stack